Abstract
It is now acknowledged that bacteria from gut microbiota deeply interact with their host by altering many physiological traits. Such interplay is likely to consequently affect stress tolerance. Here, we compared cold and heat tolerance of Drosophila melanogaster flies with undisrupted (control (Co)) versus disrupted gut microbiota (dechorionated eggs (De)). The disrupting treatment strongly reduced bacterial load in flies’ guts, though 16S sequencing analysis did not evidence strong diversity changes in the remaining bacterial community. Both chill coma recovery and acute cold survival were repeatedly lower in De than in Co flies under our experimental conditions. However, heat tolerance was not consistently affected by gut disruption. Our results suggest that microbiota-related effects on the host can alter ecologically relevant traits such as thermal tolerance.
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Authors thank the GeT-PLaGe plateform for Miseq sequencing.
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Communicated by Volker Loeschcke
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Henry, Y., Colinet, H. Microbiota disruption leads to reduced cold tolerance in Drosophila flies. Sci Nat 105, 59 (2018). https://doi.org/10.1007/s00114-018-1584-7
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DOI: https://doi.org/10.1007/s00114-018-1584-7